Author Topic: p 41 flywheel  (Read 836 times)

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Offline KilliansRedLeo

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Re: p 41 flywheel
« Reply #10 on: June 05, 2014, 12:42:22 pm »
OK Bob, here you go!

The first two pictures are of the piston circlip installed in the piston correctly, the second picture clearly shows the groove in the piston pin boss where the circlip goes.
The third picture is the piston ring installed correctly

If you click on the pictures they will enlarge so that you can see them clearly.

KRL
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

Thomas Jefferson
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Offline Bob

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Re: p 41 flywheel
« Reply #11 on: June 05, 2014, 07:21:10 pm »
Thanks Killian
The pictures are great I have the rings on the piston and the saw reassembled but I don't remember if  the little notch on the ring that goes against the pin is facing up as in your picture or if I have it facing down, does it matter as long as the ring is in the groove and up against the pin?
The circlips are in the groove but unlike the ones in your picture, mine were the clip ends meet stick out at a 90 degree angle it is not protruding past the piston but is close were as yours curl up.The clips came with the piston I see no way of installing them with 90 degree prongs facing into the piston.
Thank you for all your help.

Offline 660magnum

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Re: p 41 flywheel
« Reply #12 on: June 05, 2014, 07:23:04 pm »
Everything must be made to look like in the pictures.
We should share what we know... someone may learn...
That knowledge can live after us... and that "Pays It Forward".
Be all that you can be . . .

Offline Bob

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Re: p 41 flywheel
« Reply #13 on: June 05, 2014, 07:53:55 pm »
Thanks 660
I will have take the cylinder head off and recheck. Should have better paid attention the first time.
Thanks for all the help.

Offline 660magnum

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Re: p 41 flywheel
« Reply #14 on: June 05, 2014, 08:01:58 pm »
I doubt the piston would have fit up in the cylinder unless you did it correctly?  But it is best to check.
We should share what we know... someone may learn...
That knowledge can live after us... and that "Pays It Forward".
Be all that you can be . . .

Offline KilliansRedLeo

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Re: p 41 flywheel
« Reply #15 on: June 05, 2014, 08:49:36 pm »
OK, Bob, now I understand! Those type of clips were used a long time ago on motorcycles (Ossa, Bultaco and Montessa) the little 90 bends on the ends were an attempt at 'locking' the clip in the groove. You basically grabbed the clip with bent nose pliers, compressed it very gently, inserted the bottom of the clip in the groove and then compressed it a tiny bit more so that the top of the clip could be pushed into the groove with a small punch. IIRC, the Spanish bikes used a very thin walled piston pin that would aid in this.

Your saw is from the time period when this method was common so, I can understand from where your frustration comes.

Tim
 
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

Thomas Jefferson
1743-1826

 

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